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The Nobel prize-winning economist, Angus Deaton, has criticised the development impact community’s insistence on randomised controlled trials (RCTs) as the only source of credible evidence for interventions, declaring: we don’t need an RCT to know we’d rather be wearing a parachute when jumping out of plane. In fact, some years earlier a tongue in cheek systematic review had been published in the British Medical Journal on the effectiveness of parachutes in preventing injury.

The Centre of Excellence for Development Impact and Learning (CEDIL) was funded with UK aid from the UK government. CEDIL develops and tests innovative approaches to impact evaluation and evidence synthesis in low-income countries.

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